What aftermarket suppliers can do when tariff changes start affecting prices, margins, and reseller relationships.
Last updated: July 7th, 2026
Note: We will keep updating this article as tariff rules, supplier best practices, and helpful resources change.
Replay video:
Tariffs are not just a finance problem anymore.
For aftermarket suppliers, a tariff change can quickly turn into a customer communication problem. Costs move. Prices may need to change. Resellers want answers. Sales teams need a clear explanation. And if everyone is working from different spreadsheets, the whole process slows down.
That was the main theme of PDM Automotive’s webinar with MobyTrade: suppliers need a better way to understand what changed, explain it clearly, and keep reseller partners confident.
“Volatility is the new normal.”
The simple version
When tariffs change, suppliers need to answer three questions quickly:
- Which products are affected?
- How much did the real cost change?
- How do we explain the price impact to our customers?
If those answers are buried across emails, spreadsheets, customs documents, and product files, the supplier is forced to react slowly.
And slow reaction creates real risk:
- Margins get squeezed
- Price increases feel sudden
- Resellers lose confidence
- Sales teams get stuck defending changes without enough backup
- Competitors who communicate better look easier to work with
The goal is not to make tariffs painless. The goal is to make the response clearer, faster, and more credible.
Want to see what this looks like in practice? Watch the webinar replay above for the full PDM × MobyTrade discussion.
Why product data matters
A tariff change does not affect every product the same way.
The impact can depend on things like:
- What the product is
- Where it comes from
- What materials it contains
- How it is classified for import purposes
- Which reseller or customer needs updated pricing
That is why product data matters so much.
If a supplier has clean product information in PDM, it becomes easier to understand which items may be affected and which customers need to know. If that data is incomplete or scattered, teams end up guessing.
This is where terms like HTS codes, country of origin, material data, ACES, and PIES come in. Those details are important, but the business reason is simple:
Better product data helps suppliers explain cost changes with confidence.
For readers who want the deeper data-standard background, these PDM resources are useful:
The real cost is not always obvious
It is easy to look at a tariff rate and assume you know the cost impact.
But the full cost of a product can include much more than the tariff itself. Freight, duties, material exposure, import classification, historical entries, and sourcing decisions can all change the final number.
As Jeb Pierce from MobyTrade put it:
“It’s not just what country has the lowest tariffs, it’s what country has the lowest landed cost of origin.”
In plain English: the cheapest-looking option is not always the cheapest once everything is counted.
MobyTrade helps suppliers understand that full cost picture at the product level. That gives teams a stronger starting point before they update prices or talk to customers.
Need help understanding your true product-level cost exposure? Ask about MobyTrade’s SKU-level audit offer for PDM customers with managed GPP connections.
Two suppliers, same tariff
Imagine two suppliers facing the same tariff increase.
Supplier A waits too long
Supplier A absorbs the extra cost for a while. Margins start shrinking. Eventually, they send out a price increase with very little explanation.
The reseller reaction is predictable:
“Why did this change?”
“Which products are affected?”
“Why should we accept this increase?”
“Why is your competitor handling this better?”
Now the sales team is on defense.
Supplier B communicates early
Supplier B knows which products are affected. They understand the cost impact. They have cleaner product data and a clearer explanation.
So when they talk to resellers, the message is different:
“Here is what changed.”
“Here are the products affected.”
“Here is how we calculated the impact.”
“Here is what we are doing next.”
Same tariff. Very different conversation.
Over time, that difference matters. Supplier A looks reactive. Supplier B looks prepared.
Where PDM’s Growth Partner Program helps
PDM’s Growth Partner Program, or GPP, is PDM’s managed service for helping suppliers build stronger reseller relationships.
Under tariff pressure, that support becomes especially valuable.
Better data only helps if it gets used in the right customer conversations. GPP helps suppliers connect the dots between product data, customer needs, pricing updates, and reseller follow-up.
That can include:
- Identifying which products and customers may be affected
- Helping organize product and pricing information
- Supporting customer-specific data delivery
- Tracking adoption and reseller activity
- Helping suppliers prepare for line reviews and customer conversations
- Reducing the manual back-and-forth that usually happens through email and spreadsheets
The point is not just to manage data. The point is to help suppliers show up as better partners.
“Everybody knows this is a people industry.”
That line from the webinar matters. The aftermarket runs on relationships. But relationships are much harder to protect when the information behind them is messy, late, or unclear.
If reseller communication is already slowing your team down, book a GPP readiness session with PDM to map the gaps before the next tariff change hits.
How PDM and MobyTrade work together
PDM and MobyTrade solve different parts of the same problem.
MobyTrade helps suppliers understand tariff impact and real product-level cost.
PDM helps suppliers organize product and customer data so teams can act on that information.
GPP helps turn that information into clearer reseller communication.
Together, that gives suppliers a better way to respond when costs change.
A quick readiness check
If several of these sound familiar, your tariff response process may need work:
- Your tariff information lives in spreadsheets
- Sales, pricing, catalog, and compliance teams are not looking at the same data
- You cannot quickly tell which products are affected by a cost change
- Resellers receive new prices without much explanation
- Customer communication depends on manual follow-up
- Your team usually prepares the explanation after resellers push back
If that is the current state, the next tariff change will probably feel harder than it needs to.
Not sure where to start? Use this checklist in your next pricing, catalog, or sales meeting — then bring the biggest gaps to a GPP readiness session.
What to do next
Start by asking one practical question:
If a tariff change affected 20% of your catalog tomorrow, how quickly could you explain the impact to your top reseller partners?
If the answer is unclear, PDM can help map the gaps.
Watch the webinar replay above for the full conversation with PDM and MobyTrade. If you want to understand whether your reseller relationships are ready for tariff volatility, book a GPP readiness session with PDM.
Tariffs will keep changing. The suppliers who communicate clearly will be easier to trust, easier to buy from, and easier to keep as long-term partners.
